LEVELLER

The same height at all places; parallel to a flat ground.

"This table isn't quite level; see how this marble rolls off it?"

At the same height as some reference; constructed as level with.

"We tried to hang the pictures so that the bottom of the frames were level with the dark line in the wallpaper."

Unvaried in frequency.

"His pulse has been level for 12 hours."

A person or thing that levels.

"A soil leveller is used to prepare the field before sowing."

(especially) Something that transcends people’s differences (such as social class, wealth, etc.); something that tends to eliminate advantages and disadvantages.

A person holding a political opinion in favor of eliminating disparities between the haves and the have nots.